I am creating a world that is very cold (average of 1°C) and when I got to making the climates, I didn’t know what to do since the only climate tutorials I could find were for worlds around Earth’s temperature, not for very cold worlds. How would the climates on my planet differ from Earth?

Other Information about planet: Spins retrograde, Completes a full rotation every 67 hours, Average temperature at equator is 1 °C, The total albedo is 40%, The planet has a 1.01 AU orbit, The planet has an axial tilt of 4°,

  • $\begingroup$ Is everything else the same as Earth? Size, water, solar energy etc? $\endgroup$
    – Willk
    Jan 9, 2022 at 2:10
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    $\begingroup$ There are a lot of other contributing variables to climate besides average global temperature can you edit this post to include a more detailed description of your world? $\endgroup$
    – sphennings
    Jan 9, 2022 at 2:15
  • $\begingroup$ @sphennings what other things should I include? $\endgroup$
    – Katze
    Jan 9, 2022 at 2:22
  • $\begingroup$ @Willk the surface is 64% water and the size is the same $\endgroup$
    – Katze
    Jan 9, 2022 at 2:24
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    $\begingroup$ Anders Celsius wonders why you have downgraded the initial of his name to lower case. (And a degree Celsius is a unit of measurement, so there should be a space between 1 and °C.) (As for the question, the climate would be very different. Huge ice caps. Very much less precipitation.) $\endgroup$
    – AlexP
    Jan 9, 2022 at 2:31

1 Answer 1


Bring down the polar regions.

ice sheet https://en.wikipedia.org/wiki/Laurentide_Ice_Sheet

Earth used to be colder. Take the changes that occurred during the last glacial maximum and make them more extreme.

The average global temperature during the period known as the Last Glacial Maximum from roughly 23,000 to 19,000 years ago was about 46 degrees Fahrenheit (7.8 degrees Celsius), some 13 degrees Fahrenheit (7 Celsius) colder than 2019, the researchers said.

Certain regions were much cooler than the global average, they found. The polar regions cooled far more than the tropics, with the Arctic region 25 degrees Fahrenheit (14 degree Celsius) colder than the global average.

During periods of cooling and also warming, changes are more extreme at the poles than closer to the equator. The equator does not change much. Average global temperature changes are driven mostly by changes in average temperature at very high latitudes.

You can achieve your 0C average by extrapolating the ice age to more southerly latitudes.

If this is just Earth, colder, then colder also means drier for most places where the average temperature does not change as much.


The Amazon rainforest was split into two large blocks by extensive savanna, and the tropical rainforests of Southeast Asia probably were similarly affected, with deciduous forests expanding in their place except on the east and west extremities of the Sundaland shelf. Only in Central America and the Chocó region of Colombia did tropical rainforests remain substantially intact – probably due to the extraordinarily heavy rainfall of these regions.

A map of vegetation patterns during the last glacial maximum. Most of the world's deserts expanded...

In Australia, shifting sand dunes covered half the continent, while the Chaco and Pampas in South America became similarly dry. Present-day subtropical regions also lost most of their forest cover, notably in eastern Australia, the Atlantic Forest of Brazil, and southern China, where open woodland became dominant due to drier conditions. In northern China – unglaciated despite its cold climate – a mixture of grassland and tundra prevailed, and even here, the northern limit of tree growth was at least 20° farther south than today.


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